Lightweight glass fiber reinforced thermoplastic material
    4.
    发明申请
    Lightweight glass fiber reinforced thermoplastic material 审中-公开
    轻质玻璃纤维增​​强热塑性材料

    公开(公告)号:US20090011210A1

    公开(公告)日:2009-01-08

    申请号:US12070372

    申请日:2008-02-15

    IPC分类号: B32B5/00 B32B37/00 B32B38/00

    摘要: A glass fiber reinforced thermoplastic sheet material is provided in which certain properties, or combinations of properties, are improved relative to similar comparative sheet materials. The sheet material generally comprises a glass mat or glass fabric fiber reinforced thermoplastic resin in which the thermoplastic resin at least partially impregnates the glass mat or fabric. The thermoplastic sheet material contains about 15 wt. % to about 65 wt. % of the glass mat or fabric based on the weight of the thermoplastic sheet material and has a thickness in the range of about 0.4 mm to about 3.0 mm. By including glass mat or fabric and maintaining the sheet thickness in the aforementioned range, the present invention thermoplastic sheet material exhibits improved flexural and/or tensile strength and modulus properties at reduced basis weight compared to a comparative thermoplastic sheet materials. A method of providing the glass fiber reinforced thermoplastic sheet material having an improved combination of flexural strength and modulus and/or tensile strength and modulus properties is also described, in which a first layer of a first thermoplastic resin, a second layer of a second thermoplastic resin, and a layer of glass mat or glass fabric are provided; the first thermoplastic resin layer, the second thermoplastic resin layer and the glass mat or glass fabric layer are arranged such that the glass mat or glass fabric layer is interposed between the first and second thermoplastic resin layers; and heat and pressure are applied to substantially melt and compress the first thermoplastic resin and/or the second thermoplastic resin and to at least partially impregnate the glass mat or glass fabric layer with the molten first thermoplastic resin and/or the molten second thermoplastic resin.

    摘要翻译: 提供了一种玻璃纤维增​​强的热塑性片材材料,其中相对于类似的比较片材材料,某些特性或性能的组合得到改善。 片材通常包括玻璃毡或玻璃纤维增​​强热塑性树脂,其中热塑性树脂至少部分地浸渍玻璃毡或织物。 热塑性片材含有约15wt。 %至约65wt。 基于热塑性片材的重量的玻璃毡或织物的百分比,其厚度在约0.4mm至约3.0mm的范围内。 通过包括玻璃毡或织物并将片材厚度保持在上述范围内,与对比的热塑性片材相比,本发明的热塑性片材具有降低的基重的抗弯强度和/或拉伸强度和模量特性。 还描述了提供具有改进的弯曲强度和/或拉伸强度和模量特性的组合的玻璃纤维增​​强热塑性片材的方法,其中第一热塑性树脂第一层,第二热塑性树脂的第二层 树脂和一层玻璃垫或玻璃织物; 第一热塑性树脂层,第二热塑性树脂层和玻璃毡或玻璃织物层被布置成使得玻璃毡或玻璃织物层插入在第一和第二热塑性树脂层之间; 并且施加热和压力以基本上熔化和压缩第一热塑性树脂和/或第二热塑性树脂并且至少部分地用熔融的第一热塑性树脂和/或熔融的第二热塑性树脂浸渍玻璃毡或玻璃织物层。